Dear María, Disregarding ...
Published by Santiago Cotic, Sales Manager at SNF
Dear María,
Disregarding some "Chlorine resistant" membrane elements, oxidizing conditions must be avoided. In terms of efficiency, you should always choose those biocides with fastest effect on bacteria, being DBNPA the most chosen active. Remember that as long as the system is running, useful contact time is in the order of minutes to seconds. When you are thinking about a preservation program for standby systems, you would use long mid life products, like Isothiazolone.
Best regards
S. Cotic
1 Comment
Dear Maria, as mentioned above you may not have enough contact time with your Biocides. You might consider UV radiation with an exposure chamber sized for your required flow rates, and a bulb sized for those flow rates. Also keep in mind you may need other Pre-treatment to protect the quartz tube from fouling or particulate from eclipsing the UV rays from the bacteria. Of course these other pre-treatments would also protect your membranes on the RO as well, increasing their life and efficiency!